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Intracranial aneurysms

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https://www.readbyqxmd.com/read/28319953/dual-versus-single-energy-ct-angiography-imaging-for-patients-undergoing-intracranial-aneurysm-repair
#1
Amr Abdulazim, Christian Rubbert, Dorothea Reichelt, Christian Mathys, Bernd Turowski, Hans-Jakob Steiger, Daniel Hänggi, Nima Etminan
BACKGROUND: The invasiveness and risk of thromboembolic complications of catheter angiography underline the need for alternative imaging modalities in patients following intracranial aneurysm (IA) repair. However, the overall image quality of existing noninvasive imaging modalities, such as single-energy CT angiography (SE-CTA), compromises its value in this respect. OBJECTIVE: We prospectively investigated the value of a novel dual-energy CTA (DE-CTA) scanner and algorithm for assessing the degree of occlusion and parent vessel patency in patients following IA repair...
March 21, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28314248/concurrence-of-meningiomas-and-intracranial-aneurysms-correlation-or-coincidence
#2
Hong-Cai Wang, Hai Chen, Mao-Song Chen, Bo-Ding Wang, Shi-Wei Li, Wei Xu, Jian-Min Zhang
No abstract text is available yet for this article.
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28314245/in-reply-to-a-letter-to-the-editor-regarding-is-carotid-revascularization-safe-for-patients-with-concomitant-carotid-stenosis-and-intracranial-aneurysms
#3
Wuyang Yang, Judy Huang
No abstract text is available yet for this article.
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28314244/a-letter-to-the-editor-regarding-is-carotid-revascularization-safe-for-patients-with-concomitant-carotid-stenosis-and-intracranial-aneurysms
#4
Ximeng Yang, Daming Wang
No abstract text is available yet for this article.
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28304204/changes-in-contrast-transit-times-on-digital-subtraction-angiography-post-pipeline-embolization-device-deployment
#5
Ahmed E Hussein, Andreas Linninger, Sophia F Shakur, Fady T Charbel, Chih-Yang Hsu, Fady T Charbel, Ali Alaraj
It is postulated that hemodynamic changes occur in the distal vascular bed post-deployment of Pipeline Embolization Devices (PEDs). In this paper, we evaluate changes in the contrast transit times (TTs) on digital subtraction angiography (DSA) post-PED interventions. DSA films were analyzed using custom-made software for the time-density relationship at baseline and compared to post-PED deployment. All analyses were performed within the middle cerebral artery (MCA) M1 segment. Analyses included TT10%-100% (time needed for the contrast to change from 10% image intensity to 100%), TT100%-10%, and TT25%-25%...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28304201/evaluation-of-the-characteristics-of-various-types-of-finishing-coils-for-the-embolization-of-intracranial-aneurysms-in-an-experimental-model-with-radiolucent-coils
#6
Keisuke Ota, Noriaki Matsubara, Shigeru Miyachi, Takashi Izumi, Masashi Ito, Takumi Asai, Takashi Yamanouchi, Toshihiko Wakabayashi
In endovascular coil embolization of intracranial aneurysms, very soft coils, often called "finishing coils," are usually selected in the final stage of coil embolization. The authors developed a radiolucent coil made of thin nylon thread to evaluate the performance of coils under a situation simulating the course of embolization. The characteristics of various types of finishing coils were investigated using radiolucent coils. Experimental embolization was performed with a silicone aneurysm filled with radiolucent coils simulating the final stage of embolization...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28304199/jailed-double-microcatheter-technique-following-horizontal-stenting-for-coil-embolization-of-intracranial-wide-necked-bifurcation-aneurysms-a-technical-report-of-two-cases
#7
Takahiro Kitahara, Taketo Hatano, Makoto Hayase, Etsuko Hattori, Akinori Miyakoshi, Takehiko Nakamura
The horizontal stenting technique facilitates endovascular treatment of wide-necked bifurcation intracranial aneurysms. Previous literature shows, however, that subsequent coil embolization at initial treatment results in incomplete obliteration in many cases. The authors present two consecutive cases of wide-necked large bifurcation aneurysms to describe an additional coil embolization technique following horizontal stenting. The patients were a 53-year-old female with an unruptured internal carotid artery terminus aneurysm and a 57-year-old female with a recurrent basilar artery tip aneurysm...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28304190/the-second-generation-eclips-endovascular-clip-system-initial-experience
#8
Albert H Chiu, Joost De Vries, Cian J O'Kelly, Howard Riina, Ian McDougall, Jonathan Tippett, Martina Wan, Airton Leonardo de Oliveira Manoel, Thomas R Marotta
OBJECTIVE Treatment of wide-necked intracranial aneurysms is associated with higher recanalization and complication rates; however, the most commonly used methods are not specifically designed to work in bifurcation lesions. To address these issues, the authors describe the evolution in the design and use of the eCLIPs (Endovascular Clip System) device, a novel hybrid stent-like assist device with flow diverter properties that was first described in 2008. METHODS A registry was established covering 13 international centers at which patients were treated with the second-generation eCLIPs device...
March 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28304189/physiological-remodeling-of-bifurcation-aneurysms-preclinical-results-of-the-eclips-device
#9
Thomas R Marotta, Howard A Riina, Ian McDougall, Donald R Ricci, Monika Killer-Oberpfalzer
OBJECTIVE Intracranial bifurcation aneurysms are complex lesions for which current therapy, including simple coiling, balloon- or stent-assisted coiling, coil retention, or intrasaccular devices, is inadequate. Thromboembolic complications due to a large burden of intraluminal metal, impedance of access to side branches, and a high recurrence rate, due largely to the unmitigated high-pressure flow into the aneurysm (water hammer effect), are among the limitations imposed by current therapy. The authors describe herein a novel device, eCLIPs, and its use in a preclinical laboratory study that suggests the device's design and functional features may overcome many of these limitations...
March 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28303209/mixed-aneurysm-a-new-proposed-nomenclature-for-a-rare-condition
#10
Cassiano U Crusius, Paulo Henrique P de Aguiar, Marcelo U Crusius
BACKGROUND: Mixed intracranial aneurysms are vascular lesions appearing in the ruptured saccular aneurysms whose blood is contained by perivascular tissues forming another cavity called pseudoaneurysm. All cases until now have been reported in the literature with subarachnoid hemorrhage. CASE DESCRIPTION: A 65-year-old woman presented with multiple brain aneurysms with no history of subarachnoid hemorrhage. Endovascular treatment was chosen for left-sided aneurysms [lateral carotid wall (LCW) and posterior communicating (PCom)]...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28303207/management-strategies-for-neoplastic-and-vascular-brain-lesions-presenting-during-pregnancy-a-series-of-29-patients
#11
Celestino Esteves Pereira, Jose Carlos Lynch
BACKGROUND: The occurrence of a brain tumor or intracranial vascular lesion during pregnancy is a rare event, but when it happens, it jeopardizes the lives of both the mother and infant. It also creates challenges of a neurosurgical, obstetric, and ethical nature. A multidisciplinary approach should be used for their care. METHODS: Between 1986 and 2015, 12 pregnant women diagnosed with brain tumors and 17 women with intracranial vascular lesion underwent treatment at the Neurosurgery Department of the Servidores do Estado Hospital and Rede D'Or/São Luis...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28303205/aneurysm-of-azygos-anterior-cerebral-artery-associated-with-falcine-meningioma-case-report-and-review-of-the-literature
#12
Lucas C Meguins, Raquel C T Hidalgo, Antônio R Spotti, Dionei F de Morais
BACKGROUND: The azygos anterior cerebral artery (ACA) is an uncommon intracranial vascular anomaly of the circle of Willis. Identification of aneurysm from azygos ACA with anterior falcine meningioma is an extremely rare association. The aim of the present study is to report the case of an adult female with a ruptured aneurysm from azygos ACA in association with an anterior falcine meningioma. CASE DESCRIPTION: A 65-year-old female was admitted in the Emergency Department reporting sudden onset of severe headache...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28298012/association-of-hypothyroidism-with-unruptured-cerebral-aneurysms-a-case-control-study
#13
Kunakorn Atchaneeyasakul, Anita Tipirneni, Tony Zhang, Priyank Khandelwal, Sudheer Ambekar, Brian Snelling, Sushrut Dharmadhikari, Chuanhui Dong, Luis Guada, Kevin Ramdas, Seemant Chaturvedi, Tatjana Rundek, Dileep R Yavagal
OBJECTIVE Thyroid disorder has been known to affect vascular function and has been associated with aortic aneurysm formation in some cases; however, the connection has not been well studied. The authors hypothesized that hypothyroidism is associated with the formation of cerebral aneurysms. METHODS The authors performed a retrospective case-control study of consecutive patients who had undergone cerebral angiography at an academic, tertiary care medical center in the period from April 2004 through April 2014...
February 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28286849/isolated-oculomotor-nerve-palsy-following-minor-head-trauma-a-case-report
#14
Iraj GoliKhatir, Hamed Aminiahidashti, Hasan Motamed Motlagh, Seyed Farshad Heidari
Isolated third nerve palsy develops in numerous intracranial pathologies such as closed head trauma, tumor, and aneurysm. This report describes a 61 years old female with an abrasion on the left forehead and ptosis of the left eye. Initial computed tomography did not reveal any causative cerebral and vascular lesions or orbital and cranial fractures. High-resolution and multi-axial enhanced Magnetic resonance imaging (MRI) can be helpful in diagnosis and monitoring of patients with this rare phenomenon.
2017: Emergency (Tehran, Iran)
https://www.readbyqxmd.com/read/28285454/association-between-hemodynamics-morphology-and-rupture-risk-of-intracranial-aneurysms-a-computational-fluid-modeling-study
#15
Tianlun Qiu, Guoliang Jin, Haiyan Xing, Haitao Lu
The objective of the study was to examine the correlations between intracranial aneurysm morphology and wall shear stress (WSS) to identify reliable predictors of rupture risk. Seventy-two intracranial aneurysms (41 ruptured and 31 unruptured) from 63 patients were studied retrospectively. All aneurysms were divided into two categories: narrow (aspect ratio ≥1.4) and wide-necked (aspect ratio <1.4 or neck width ≥4 mm). Computational fluid dynamics was used to determine the distribution of WSS, which was analyzed between different morphological groups and between ruptured and unruptured aneurysms...
March 11, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28284448/growth-of-giant-intracranial-aneurysms-an-aneurysmal-wall-disorder
#16
F-X Ferracci, V Gilard, H Cebula, N Magne, J-P Lejeune, O Langlois, F Proust
The enlargement of giant intracranial aneurysms (IA) can be observed in 30 % of cases resulting in a neurological deficit and epilepsy due to its mass effect. This growth process could be due to a morphological disorder of the IA wall. The authors report on 2 cases of giant IA growth responsible for intracranial hypertension. The treatment of these giant IA required a microsurgical excision combined with a series of cerebral revascularization procedures. The role of vasa vasorum on the inflammatory granuloma outside the vessel, which induced the enlargement, is discussed...
March 8, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28283868/intracranial-aneurysms-in-patients-with-autosomal-dominant-polycystic-kidney-disease-prevalence-risk-of-rupture-and-management-a-systematic-review
#17
REVIEW
Federico Cagnazzo, Carlo Gambacciani, Riccardo Morganti, Paolo Perrini
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder associated with high incidences of intracranial aneurysms. We performed a systematic review with the purpose of clarifying the prevalence, risk of rupture, and appropriate management of intracranial aneurysms in the ADPKD population. METHOD: PRISMA guidelines were followed. We conducted a comprehensive literature search of three databases (PubMed, Ovid MEDLINE, and Ovid EMBASE) on all series reporting ADPKD patients with intracranial aneurysms...
March 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28283187/successful-delayed-coiling-of-a-ruptured-growing-distal-posterior-cerebral-artery-mycotic-aneurysm
#18
C Champeaux, N Walker, J Derwin, A Grivas
Intracranial infectious aneurysm (IIA) is a rare form of cerebrovascular malformation for which obliteration may be undertaken after rupture or non-response to targeted antibiotic therapy. We discuss the case of a 19-year-old man who presented with acute neurologic decline (Glasgow Coma Scale of 8) and endocarditis. CT images demonstrated subarachnoid haemorrhage, hydrocephalus and a mycotic aneurysm on the left posterior cerebral artery. Conservative management was initially decided due to the high risk of stroke and hemianopia...
March 7, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28281722/intracranial-region-of-the-vertebral-artery-morphometric-study-in-the-context-of-clinical-usefulness
#19
Jarosław Dzierżanowski, Arkadiusz Szarmach, Bartosz Baścik, Piotr Czapiewski, Adam Muc, Maciej Piskunowicz, Mateusz Krakowiak, Tomasz Szmuda, Paweł Słoniewski, Edyta Szurowska, Paweł J Winklewski
BACKGROUND: The aim of this study was to analyse the morphometry of the intracranial segment of the vertebral artery in the context of clinical usefulness. The results were compared with published data available in full-text archived medical journals. MATERIALS AND METHODS: More than 100 DSA (digital subtraction angiography) and 3D angio-CT (computed tomography) examinations were used to measure the following parameters: the whole and partial length of V4 in characteristic anatomical points, the diameter in three places (on the level of foramen magnum, in point of exit to the PICA, and in the vertebro-basilar junction), the angle of connection to the VAs, and all anatomical variations including fenestration, duplication, dolichoectasia or absent artery...
March 10, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28272703/the-study-of-endogenous-hepatocyte-growth-factor-in-the-pathogenesis-of-intracranial-aneurysms
#20
L-L Yu, Y-J Liu, Z-H Wang, L Shi, L-X Liu
OBJECTIVE: Inflammation as a significant influence factor plays an important role in the formation and rupture of intracranial aneurysms. However, based on plenty of related studies, it is believed that the hepatocyte growth factor (HGF) is able to prevent vascular inflammation. This paper, therefore, explored the role and mechanism of endogenous HGF in the pathogenesis of intracranial aneurysms. MATERIALS AND METHODS: 16 blood samples were collected from the intracranial aneurysms and the lumens of the femoral artery of 16 patients...
February 2017: European Review for Medical and Pharmacological Sciences
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